genItemParameter

Either "a" for the item discrimination or "b" for the item
difficulty

type

vector of length two. If type = "a", parms must be setup such
that \(a ~ U(parms[1], parms[2])\). For type = "b", parms must be such
that \(b ~ N(parms[1], parms[2])\).

parms

number of item parameters to generate

quantity

vector of length 2 containing the limits for the difficulty
distribution

truncate.b

Generates binary test data based on Item Response Theory using the two-parameter logistic model (Lord, 1980 <doi:10.4324/9780203056615>). Useful functions for test equating are included, e.g. functions for generating internal and external common items between test forms and a function to create a linkage plans between those forms. Ancillary functions for generating true item and person parameters as well as for calculating the probability of a person correctly answering an item are also included.

genItemParameter: Generate Item Parameter Values

Description

Usage

Arguments

Value